Field-Serviceable-Smart-Power-Monitor-using-STM32F103C8T6

Introduction

Developed a cost-effective energy monitoring device with professional-grade firmware update capability.

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Structure

• docs/: Documentation and design notes.
  • notes/: Development notes and considerations.
  • references/: Reference materials and datasheets.
• project-architecture/: Overview of the project architecture, containing main driver code structure.
• project-halartifactspace/: Hardware Abstraction Layer artifacts generated from STM32CubeIDE & STM32CubeMX to act as a reference for HAL-based implementations.
• project-obsidianspace/: Obsidian vault for project notes and documentation.

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Overview

This project focuses on creating a smart power monitor using the STM32F103C8T6 microcontroller. The device is designed to be field-serviceable, allowing for easy maintenance and updates in professional settings. Key features include:

• Real-time energy monitoring capabilities.
• Reliable system design for continuous operation with Watchdog & Reset-Clock features.
• Firmware update functionality to ensure the device can be easily updated in the field using XMODEM protocol & CRC checks.

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Features

• Microcontroller: STM32F103C8T6 (Cortex-M3)
• Peripherals:
  • SPI for communication with the ADE7758 energy metering IC
  • UART for communication and firmware updates
  • GPIO for status indicators and control signals
  • RCC for reset & clock management
  • AFIO for alternate function configuration
  • EXTI for external interrupts (e.g., for power failure detection)
  • NVIC for core interrupt management
  • I2C for LCD interfacing (optional)
  • IWDG for fault management (marked as Deprecated due to Hardware Watchdog auto-implementation)
• Energy Metering: ADE7758 IC for accurate energy measurement.
• Firmware Update: XMODEM protocol with CRC checks for reliable updates.
• Power Monitoring: Real-time measurement and reporting of power consumption.

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Hardware Components

Note that this sections can be expand with new requirements in the future.

• STM32F103C8T6 Microcontroller
• ADE7758 Energy Metering IC
• LCD 16x2 Display (Optional for user interface)
• Relay 5V for load control
• L7805CV Voltage Regulator
• BC547 Transistor
• 4N35SM Optocoupler
• MCP4728E to simulate the 3-phase voltage and current inputs for testing purposes.
• Various resistors, capacitors, diodes, and connectors as per the schematic or PCB design.